Dosing and Administration

Postoperative pain relief for cats

Onsior® (robenacoxib) is available in two formulations, so it’s convenient to administer in the hospital and at home.

Onsior Tablets for Cats Dosing

1 mg/kg (0.45 mg/lb) orally once daily for up to maximum of 3 days. Use the lowest effective dose for the shortest duration consistent with individual response.

Administer first dose approximately 30 minutes before surgery.

Onsior Injection Dosing

2 mg/kg (0.91 mg/lb) subcutaneously once daily for up to a maximum of 3 days.

Administer first dose approximately 30 minutes prior to surgery.

Subsequent doses can be given via subcutaneous injection or interchanged with oral tablets in cats ≥ 5.5 lbs and ≥ 4 months of age.

Tablet Dosing Range

Number of Whole
6 mg tablets

Weight of Cats
in Kilograms

Weight of Cats
in Pounds

2.5 to 6 kg
5.5 to 13.2 lbs
6.1 to 12 kg
13.3 to 26.4 lbs

Subcutaneous Injection Dosing

Dose in kilograms

Dose in pounds

2 mg/kg
0.91 mg/lb

Administering Onsior for surgery

Onsior can be given for up to a maximum of three total doses over three days not to exceed one dose per day.

Day 1

Administer the first Onsior dose approximately 45 minutes before soft-tissue surgery.

DAY 2

Administer (or instruct the owner to administer) the second Onsior dose approximately 24 hours after the first dose.

DAY 3

Administer (or instruct the owner to administer) the third Onsior dose approximately 24 hours after the second dose.